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Discussion Starter · #1 · (Edited)
WHITE NOISE. You asked

so whats the difference between a gsr txbox and a tme/rs txbox?

Thanks to all the people on previous threads who's input, made this possible for me to trawl through on the MLR, and also to those who have put up these pictures in the past, I hope you do not mind me using your pics. I just added info to your pics :smthumbup:thumbup:

There is no difference they both came with Torson type front LSD Diff's in the transfer box when leaving Japan as standard, and a AYC Computerised assisted DIFF in the rear. THE V GSR. VI GSR. THE VI TME GSR. sometimes known as a 6.5. I am not sure about the IV there is a lot of confusion on this site when someone asks this type of question, as I see it, the reason is that most of us, including me often, are not technically up on the jargon these clever experts use i.e. neverneverman todd-w. spn. STU8. AndyF_RSX. etc, very clever people. i.e. these two words Helical Type meaning with gear's, and VCU or viscous meaning the coupling unit that house's these gears, as in the picture I have put up, this is the area the 4 bolts are breaking in the transfer box which has this Torson Type LSD, again if you do not have this type of TORSON LSD this will not affect you.




This is the diff that some are having a problem with in the 5 speed M/T EVO X






And then put into the transfer box which is also known as the CENTRE DIFF which is bolted to the side of the gearbox



If you have NO LSD in the transfer box, like the bottom picture you can not break these bolts they talk about as this is what they call a OPEN DIFF. and hence NO bolts to break. i.e. have a look round the top cover of the open diff picture NO HOLES.

It is this helical or viscous coupling typed TORSEN LSD i.e. two pictures below that the bolts are in that break.




I have only just looked into this so I am not the brain of britain on this subject. I think that when people keep going on about an RS and talk about the LSD DIFF on that car, what they are not saying to you is, that the diff they are referring to is in the REAR of the RS, and is a plate type LSD, this took me a while to understand when reading various posts. the RS has an open type diff in its transfer box or known as the centre diff by some when leaving Japan unless requested otherwise, as far as I am aware bottom picture, you can see the bar they talk about inside the caseing so you can see right through this type of diff, you can upgrade at any time for what ever motor sport you take up. maybe to a plated LSD like this one here below 2 pics, this also can be put into the transfer box, if you wish to remove the open type diff it came with, this is the type that make's the chatter sound they talk about. The experts are saying i.e. todd-w. neverneverman (Paul) or spn (Simon) that there are different size transfer box, centre diff caseings out there, if you wish to upgrade to LSD type diffs, so be careful check first that the LSD you are going to use will go into your caseing. It would be a good idea to talk to these guys before going ahead with any upgrade.






Just trying to be helpful.

Please experts, correct anything I have put up. as I am at the learning stage.

Have brought this thread over from a thread I started in the gearbox/clutch/transmission section titled Transfer Box cover question.
 

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Good read :smthumbup with some very helpful piccies, especially showing the bar on the open, as when people are selling they dont know how to tell the difference

1 correction though, i definately am not 1 of the 'clever experts' :D, i have just had a go, and like to understand the job i am doing, so my experience only goes as far as the LSD transfer boxes i have split, and advice i have been given on here ;)

As for the transfer boxes that come on vehicles, the story i was told is that the GSR's are supposed to come with open type diffs fitted, but as the factory line ran out, LSD's were fitted, my 5 GSR definately came with an LSD type, though i cant say for sure whether that was fitted at a later date

from the Evo FAQ, on LSD bolt failure

Problem and cure:
This is a problem with the factory fitted Front Helical (Torsen) Limited Slip Differential. The Helical LSD is standard fitment on RSII's, optional on the RS and although they were never meant to be fitted, some crept onto the GSR models when the production line ran out of normal open type diffs.
Hopefully neverneverman will give his comments on whats been said, and it may be worth making this a sticky for future referance :smthumbup

Stu
 

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Discussion Starter · #4 · (Edited)
Stu8

STU8 says ..... 1 correction though, i definately am not 1 of the 'clever experts' ,

thats exactly what you are an expert, because you take time and trouble again and again to inform people like me and others, as to how to repair things :smthumbup
 

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STU8 says ..... 1 correction though, i definately am not 1 of the 'clever experts' ,

thats exactly what you are an expert, because you take time and trouble again and again to inform people like me and others, as to how to repair things :smthumbup

MUFFs Pappa Ross
:blush: I just feel thats the spirit of the MLR, people help you, you learn from their advice, then you pass it on, giving the experts more time to help with the more complicated, and specialised issues

Stu
 

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Discussion Starter · #6 · (Edited)
wondering?

STU8 ... wrote.. and it may be worth making this a sticky for future referance .

if it did would I be able to edit and add to it whilst being a sticky, as when I read more and learn I like to add to my threads?

I have a new QUAIFE ATB DIFF in front of me at the moment and reading all about it.
 

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Very good that should help a few members out !
Only one thing ,If you have the Open diff then it is unlikely that you can fit a LSD unit into the Diff case as they have a bigger diameter . You would need to fit LSD and a case to upgrade ..
There is 3 different sizes of LSD and crown wheels just to make it hard ..

Paul..
 

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if it did would I be able to edit and add to it whilst being a sticky, as when I read more and learn I like to add to my threads?

I have a new QUAIFE ATB DIFF in front of me at the moment and reading all about it.

MuFFs Pappa Ross :mitsi:
yer, you can still edit it, unless someone closes/locks it

It would probably end up a sticky in 'Gearbox / Clutch / Transmission '

Stu
 

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Discussion Starter · #9 · (Edited)
Very good that should help a few members out !
Only one thing ,If you have the Open diff then it is unlikely that you can fit a LSD unit into the Diff case as they have a bigger diameter . You would need to fit LSD and a case to upgrade ..
There is 3 different sizes of LSD and crown wheels just to make it hard ..

Paul..
Paul you, cannot beat experience when it comes to these kind of issues.;)
 

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STU8 ... wrote.. and it may be worth making this a sticky for future referance .

if it did would I be able to edit and add to it whilst being a sticky, as when I read more and learn I like to add to my threads?

I have a new QUAIFE ATB DIFF in front of me at the moment and reading all about it.

MuFFs Pappa Ross :mitsi:
Good thread :D

If you have the Quaife ATB front diff, it won't fit a 4/5/6 as the bushing in the VCU (the bit below the crownwheel in the top pic) is too small. They're 7/8/9 only unfortunately unless you start machining things.

The mitsubishi LSD is an ATB type, there may be a difference in the amount of torque they can transfer between the front wheels but I haven't been able to find out what the transfer ratios are (Quaife couldn't help).

Cheers,

Simon
 

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Discussion Starter · #11 · (Edited)
Good thread :D

If you have the Quaife ATB front diff, it won't fit a 4/5/6 as the bushing in the VCU (the bit below the crownwheel in the top pic) is too small. They're 7/8/9 only unfortunately unless you start machining things.

The mitsubishi LSD is an ATB type, there may be a difference in the amount of torque they can transfer between the front wheels but I haven't been able to find out what the transfer ratios are (Quaife couldn't help).

Cheers,

Simon
Thanks Simon, it is people like yourself that keeps everybody up to date with all the diff problems an expert at work:thumbup: Just by saying the Quaife will not go straight onto a 4/5/6 caseing would have been news to me, if I had wanted to take that road,:smthumbup

Thanks for the use of your OPEN DIFF picture by the way Simon.

The new Quaife ATB LSD I have here in front of me is for a different car all together a front wheel driven car just reading the bumf that came with it. It is all away above my head some of this stuff, thats why its good to know people like you. :smthumbup
 

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Old thread but the casing could be listed on here so you know which boxes are compatible allow a LSD to be fitted ?
 

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Hey guys. Just to confirm. With having both front wheels off the ground and spinning one in a forward direction and having the opposite wheel spin backwards tells me that I have an open front differential if I am correct? If so does this mean that there is zero chance of having any issue with front diff bolts? I am chasing a noise in my VI.
 

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Hey guys. Just to confirm. With having both front wheels off the ground and spinning one in a forward direction and having the opposite wheel spin backwards tells me that I have an open front differential if I am correct? If so does this mean that there is zero chance of having any issue with front diff bolts? I am chasing a noise in my VI.
mine did this also but when i look inside the hole in the right side there is no split down the middle of the hole.. and when i took it apart it does inded have 4 screws inside.. they were okey on mine btw..

i checked the screws without taking down the case.. (i guess its the correct screws)

2nd picture you can (or cant se the split because this is not a open diff)

Btw removing the axel.. it can be done without a slide hammer.. put in a good strong 8mm bolt and find a pipe or something you can slide in from the side and then a good large hammer to give it that shock.. (a slidehammer is better, just if you cant get one it can be done)
 

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